Using Magic Mushrooms and Ayahuasca both made me more in touch with my body, and pushed me to take care of myself more. I noticed, while on Ayahuasca, that much of my anxiety was due to physical pain (or vice versa!), and that self-medicating with alcohol & tobacco were ultimately causing me more pain and dependence.
I was addicted to smoking, but not addicted to alcohol. Now, trying either leaves a bad taste in my mouth. Although, for health reasons, ironically, I am trying to pick up drinking Pinot Noir on occasion!